<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8"> 
<title>CSS基本语法</title> 
<style>
img.clip{
    position: absolute;
    clip:rect(0px 100px 120px 0px);
}
</style>
</head>

<body>
    <img class="clip" src="clip.png"/>
</body>
</html>